Car-roof construction.



J. L. MOHUN.

OAR ROOF CONSTRUCTION.

APPLICATION FILED JULY 2s,1 911.

Patented Aug. 5, 1913.

2 SHEETS-SHEET 1.

wrmsss es J. L. MOHUN.

OAR ROOF CONSTRUCTION.

APPLICATION FILED JULY 28,1911.

Patented Aug. 5, 1913.

2 SHEETS-SHEET 2.

NOR

wrmssszs JOHN L. Motion, on BBOGKLYN NEW YQRK.

CAR-R003 QONSTRUCTIUNt i (ceases.

' Application filed i s as, 1211. Serial so. sett es.

To miZ --wlzom it may concern:

Be itknown that 'LJOHNL. MOHUN, a citizen of the United States, residingat Brooklyn, in the county of Kings and State cl New York, have inventednevv'anrl useful Improvements in Car-Roof Construction, of which thefollowing is a specification.

This invention relates-to a car roof construction, and more particularlyto flexible metallic roots for freight cars, such as shown and'descrioedin my prior application Ser. No. 629,960, tiled May 27, 1911 One of theobjects of my present. improvement is to prevent any leakage at thepointof fastenitg of the root to the side plates of the ran-and for thispurpose 1 provirle an int'roved form of holt connection which not onlyprevents leakage, but also prevents the bolt from becoming loose. 1'

Another objectis to provide an improved rooflining to serve as aninsulation against heat'and prevent high temperatures Within the car.

Another object is to provide improved means for fastening the purlins tothe metal carlinesyandzstill another object is to pros vicle an improvedform of car-line cap for covering the carline and the turned over edgesof the metal roofing sheets;

ln the accompanying drawings: Fi ure 1 is a transverse section of aportion 0 a car roof, showing my improved heat insulat-' ing liningsuspended from the cal-line; Fig. 2, a transverse section of the carroof at the side plate of: the car, showing my improved fastening meansfor the carline hood and rooting sheets; Fig. 3, asimilar section talgenbetween carlines and showing my improves bolt connection for fasteningthe roofing sheets; Figs. 4 and 5, a plan and side View respectively,showing my improved means for fastening the purlinsto the carlines; Fig;6, a transverse section of a'carline anti carline cap, showing the edgesof the roofing sheets; Fig. 7, a similar view of theridge pole and ridgecap; and-Figs. 8 and 9, s1 .ilar views of a carline an a riclge pole,respcctively showing a modification in the roofing sheets and the caps.

As set forth in my prior applications, the

roof construction in general, is composedo't metal carlines, 20, formedof U shaped. A

pressecl steel sect-ions; .Which extentlac'ross the car from one sicleplate to the otherfiancl carry metal purlins fkl, and a metal ridgepole,- 25, which together with the cal-lines roofing sheet and the sideplate around he hole through which the boltpasses and thereby preventsany rein Water from passmgin arouncl the holt and leaking into the car.The end of tee colt then passes through the turned down edge of theroofing sheet, which may he clampeol tightly against the outside-of thecollar by means of a nut, Y0, and the inside of the collar be drawntightly against the siole plate by a not upon the inside end of thebolt, as shown in Fig 3. This makes a tight joint which completelyexcludes moisture atthe same time pro vents loss of the bOllJS.,' foreven if the outsiclc not should come oilfthe bolt is still firmly heldin position by thefiangc and insirle nut, and it the inside not shouldcome off, the

bolt is still held in place by the roofin sheet which is lielcl loyother bolts, so that-it is practically. impossible that any of the boltsshould become loose or he accidentally lost. f a

Fig. 2 shows'the arrangementof the 'tning the car line Where the bolt,68,

passes not only thrcngh the roofing sheet and style late, but alsothrough the flange ct car inelfitl, and the carli'ne hoe-cl,

In this case the outside nut, 70, clamps the of he hood, and the roofingsheet .lar 39, of theholt, and the against the "l eenie nut the boltcollar tightly b 2 I fitted therein so as to effectually key the mentrelates to the shape 'or configuration "admission f moisture orlcinderswhich' agains the side plateand he carline flange I which is n'eferablysealed n the side plate 4 'poi ted at their ends on blocks, 74, securedto the side plates, 21, and at the middle or intermediate points, byhangers, 73, attached at their upper endsto the carline, 20. This formsan air space between the ceiling or lining and the outside'metal roof ofthe car,

and efiectually prevents the radiation of a great amountof heat throughto the interior of the fear.

In order to fasten the purlins to the carlines, and key the structuretogether at these points, the purlin, 24, may be notched, and a metalstrap 2%, fitted over the notched portion of the purlin and bolted to'the car- .line, 90, as indicated in Figs. land 5.- The strap may be ofsubstantially the same width as the channel in the carline, and

structure together at this point.

. .--\nother feature of my present improveof theedges of the. roofingsheets and the carline',-caps and ridge caps cooperating therewith. Asshown in Figs. 6 and 7, the

edges of the roofing sheets are folded over and down nearly fiat, Whilethe side edges of the caps, 22 and 23, maybe folded inward 'to asubstantially horizontal position; the

toldcd edges of the roofing sheets and caps being hooked together orinterlocked, so as to slide within each other and form a close jointwith a very,t0rtu0usp'assage for the might be drivenin under the'capmembers.

The folded edges of the cap members are rounded to form loops, whichserve' as strengthening ribs and contain cavities, 22 in the carlinecaps, and 33, on the ridge cap to provide sutficient space for clearanceand v for the collection of thevery small anzount of cinders or other.foreign matter, which might possibly pass around the interlocked edgesof theshe'ets. Withthis form of joint the sheetsare slidablv supportedwith re spect to the supporting members, and the caps, and theentrance'of Cinders into the channels in the carline and'ridge pole withthe moisture is prevented.

According to the modification shown in Figs. 8 and 9, the edges'of-theroofing sheets are turned up, then-over and down substantiallyvertically, over the channelin the carline. 20, or in the ridge pole,25, and the carline cap, 22, and the ridge cap, 33, are in the form ofinverted hannels covering said upturned edges of the-roofing sheets. inlhis case the turned up edges-prevent the entraurv of cindei's into thecarlines and ridge pole, and any water or moisture which passes oversaid lip-turned portion drains into the channel in the canineor-ridgepole.

This form oft turned up'e'dge also serves to stiffen the roofingsheets,- andrenders them more durable. v

Having now described my inventiomwhat T'elaim as new, and desire tosecure by Letters Patent, is:

7.. In a car roof, the-combination with an outside metal roofing sheetbent'down over the side late ofthe-car, of a fastening bolt mssingthroughsaid sheet and side plate and having an integral collar-betweenthe side plate and said roofing; sheet.

2. In a car roof, the combination with an outside metal roofing sheetbentdown over the side plate of the car, of fastening. bolt passingthrough said sheetand side plate and having an integral collar betweenthe side plate and-said roofing sheet, means'for fastening the bolt tothe side plate,.and a nut on said boltoutside ofthe roofing sheet.

In. a: car roof, the'combin'a'tion with an outside. metal roofing memberextending 1 down over the'side plate of'tlre car, of a fasteningboltpassi-ng through said member and side plate and having acollar-between the side plate and said roofing member and making I aWatertight. joint-on thebolt.

4. In a-car roof, the combination with metal carlinfes havingdrainehannels "and outside metalroofing'fsheets supported thereon, oftransverse rafters, hangers-at- Qtached-to the walls of the carlinesabove the bottom of said drain channels for suspending the rafters fromthe carlines, and an in .sulating ceilingcarried by said rafters.

5. In a car roof, the combination with a U shaped metal. carline, of anotched purlin supported thereon, and strap passing over the notchedportion of the purlin and secured to the carline. I 6. Ina car roof,the. combination Lvvitha U shaped metal carline having a dep-fessed.

seat for a purlm, of apurlin having a'si'iotcli' opposite the channel ofthecarline, "anda. strap ,lpassn1g over the notched ,portion of" tl iepurlin landsecured Within the channel of t. e carlitne.

.7. In a car roof, the combinationlwitha metal lcarline, of rnetalroofing sheets supported thereon, and having their edges folds .edox'griand a metal cap for 'said carline cov .eringt e ed es oiftl eroofing sheets and havinggits e ge fol d under in 'an up 'wardly roundedloop forming an ovaleavity wifl'lin the fold and slidably engaging andshfiefs a d a ing its Edge foldfid Under intvz'iuckin l with the turnedmqer edges-0f with an upwardly rounded 100p and inter- 10 the roofingsheets.

8. In a car roof, the combination With a metal ridge pole, of metalroofing sheets supported thereon at; their upper edges and Witnesses:having said edges folded over, and. a ridge A. S. FOWLER;

(up covering said upper edge of the roofing JAMES M. HOGAN.

lockin with the ed as of the roofin sheets; 0 O 7 JOHN L. MGH'UN.

Cspies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C. I

